Jose has a comic book collection that he keeps among 5 shelves with an equal number on each shelf. His father adds 20 comic books to the bottom shelf, so the shelf now has 125 books. How many total books are in his collection? Use algebra to solve the equation.(1 point) $$

Answer 1

Let's say each shelf has x comic books.
If there are x comic books on each shelf, there are 5 * x = 5x books in the collection.
When his father adds 20 comic books to the bottom shelf, the shelf with x comic books becomes x + 20, and the total number of comic books becomes 5x + 20 = 125.
Subtracting 20 from both sides, we get 5x = 105.
Dividing both sides by 5, we get x = 21.
Since each shelf has 21 comic books, the total number of comic books in the collection is 5 * 21 = <<5*21=105>>105. Answer: \boxed{105}.